@article{CMH_1949__23_138985,
     author = {Adolf Kriszten},
     title = {Elliptische {Systeme} von partiellen {Differentialgleichungen} mit konstanten {Koeffizienten.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {243--271},
     publisher = {mathdoc},
     volume = {23},
     year = {1949},
     zbl = {0039.10404},
     url = {http://geodesic.mathdoc.fr/item/CMH_1949__23_138985/}
}